A discrete random variable can take the values ,

MATHEMATICS · Single correct · AP · AP Statistics · Probability Random Variables Distributions · Probability Random Variables Distributions

Problem

A discrete random variable

X

can take the values

1

2

3

and

4

. If

P(X=1)=0.15

P(X=2)=0.30

and

P(X=3)=0.25

, find

P(X=4)

. (a)

0.20

(b)

0.30

(c)

0.55

(d)

0.25